<a href="<%= user_path(current_user) %>">
  <%= userLogo current_user %>
</a>
<h1>
  <%= current_user.name %>
</h1>
<span>
  <%= link_to "查看我的个人档案", current_user %>
</span>
<span>
  <%= current_user.microposts.count %>个话题
</span>